First-Order Model of Thermal Lensing in a Virtual Eye
Abstract
An ABCD beam-propagation method was used to build a first-order mathematical model of a thermal lens effect from a near-infrared laser beam in water and ocular media. The model was found to fit experimental z-x scan data best when the thermo-optic coefficient dn/dT of liquid water at 292 K was -4.46x10(-5) K(-1). The physiological parameters of the human eye were simulated in a simple eye model using this fitted dn/dT value. Conservative model simulations for 1150 and 1318 nm laser radiation include parameter sets used in experimental ocular exposures performed by Zuchlich, et al., to illustrate the transient response of the thermal lens approaching the limits of the retinal damage thresholds for equivalent laser radiation sources.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2009
- Accession Number
- ADA499727
Entities
People
- Ashley J. Welch
- Benjamin A. Rockwell
- Clifton D. Clark Iii
- Rebecca L. Vincelette
- Robert J. Thomas
Organizations
- University of Texas at San Antonio